Insulator



(.No Model.)

F. M. LOCKE.

INSULATOR. v

Patented May 22, 1894.

f c d i, d C :1 /c w ATTORNEYS.

. UNITEDE STATES PATENT OFFICE.

FRED M. LOQKE, or VICTOR, ASSIGNOR or ON ALF TO GEORGE A. PADDOOK, OFAUBURN, AND WILLARD 0. PAGE, or PALMYRA, NEW

YORK.

VINISULATOR.

' SPECIFICATION forming part of Letters Patent No. 520,367, dated May22,1894. I

Application filedDecember 4. 1893. Serial No. 492,733. (No model.) I

To all whom it may concern:

Beit known that I, FRED M. LOOKE, of Victor, in the county of Ontario,in the State of New York, have invented new and useful Improvements inInsulators, of which the following, taken in connection with theaccompanying drawings, is a full, clear, and exact description.

This invention relates to the construction of insulators adapted to bemounted upon pins secured to the cross arms of poles, having partinnlarreference to insulating wires over which electricity is adapted to pass.

Ihave learned from experience that electric currents often creep throughmoisture, dust or other matter on the surface of an insulator part way,that is to the edge of the first petticoat, and then jump through theair to the wet cross arm or other points, and my object is to force thecurrent over the surface,

if it escape-at all.

. My further object is to produce such an insulating hood so constructedthat it may be .used to support one or more wires, and, at the sametime, providing it with a multiplicity of petticoats'so constructed asto prevent the current from escaping from one wire to another, or fromthe wire to the pin itself without first traveling the surface of thehood, cheap and durable in construction and of great utility. It mayalso be used in place of double insulators for transposing wires, and tothat end my invention consists in'the several new and novel features ofconstruction and combination of parts hereinafter" described and whichare specifically set forth in the claim hereunto annexed. It isconstruct-. ed as follows, reference being had to the accompanyingdrawings, in which- Figure 1, is a vertical section of the insulatinghood mounted on a supporting pin cross arm,

showing the contour of the hood Figs.2and 3 are views of supporting pinsprovided with j di 'erent means for securing them to the upon which'thehood is adapted to be mounted, Fig. 2 showing the hood in dotted lines.

A- is the pin constructed of anyform or I design desired, adapted to besecured to the cross arm in any ordinary and well-known way, and havingits upper end threaded or provided with other means by which theinsulating head --B- is secured.

The insulator is provided with grooves and -.a.' in which the electricwires are adapted to rest and be supported, and care petticoats adjacentto.the wires upon either side thereof, and in front of thesame arepetticoats of larger skirts or diameter d-, which serve the purpose ofplacing a dielectric in the path and prevent the es cape or jumping ofthe current from one wire to another, or from the wire to the insulatingpin.

with a multiplicity of petticoats have been eretofore constructed; butthis I do not claim.

What I claim is- 1 An insulator. having annular grooves, horizontallyextending petticoats adjacent thereto, and auxiliary petticoats having agreater circumference adjacent thereto for the purpose of preventing thecurrent from escaping from one line to another, as set forth.

In witness whereof I have hereunto set'my hand this 25th day ofNovember, 1893.

FRED M. LOOKE.

In presence of PETER V. KEEFE, Z. O. CURTICE.

I am aware that insulating hoods provided

